What a 2019 season it was for Boston left-hander Eduardo Rodríguez . He logged 203.1 innings, easily a career-high, with a 19-6 record, a 3.81 ERA and 213 strikeouts. His strikeout rate actually dropped a bit last year, but he made some nice steps in his development, both in a statistical and peripheral sense. The majority of his metrics improved, and we’ll get to that, but the first thing that led to this breakout was the fact that he stayed healthy. It was the first time in his career he made more than 24 starts and it was a huge jump in innings. In 2018, including the postseason, he threw just 139.2 innings. Is there some cause for concern since he’s coming off such a large jump in innings pitched? Absolutely, but the delay to the start of the season, in theory, benefits him a bit, as he gets some extra time to recover.

Let’s start with his ground ball rate, because that was the first thing I was most excited about, aside from staying healthy, for Rodriguez’s 2019 season. He...